X-ray radiographic apparatus

Details X-ray radiographic apparatus X-ray radiographic apparatus

1988-12-19

1990-02-13

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

Exposure timer

378 97, 25037009, H05G 164

Patent

active

049013360

ABSTRACT:
An X-ray radiographic apparatus including a solid-state image sensor having a photoelectric conversion member and a transfer member. A system controller stops supplying field shift pulses, and a electric charge is not transferred from the photoelectric conversion member to the transfer member, during X-ray irradiation until a quantity of X-rays reaches predetermined value. One frame image data from the solid-state image sensor just after X-ray irradiating term is obtained. It is easy to obtain data corresponding to one frame image which is of proper density. The electric signal is read from the transfer member while the system controller has stopped the supplying of field shift pulses. It is possible to suppress an increase of dark current noise, and obtain high quality X-ray image data.

REFERENCES:
patent: 4383327 (1983-05-01), Kruger
patent: 4736397 (1988-04-01), Velasguey

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